[mono][hotreload] Adding a new field didn't work

[thaystg]

Program.cs:

public class EntryPoint
{
	public static void Main(string[] args)
	{
		try
		{
			AddProperty1.Main2(); // line 7
			Console.Write("\f");
		}
		catch (Exception e)
		{
			Console.WriteLine(e);
			throw;
		}
	}
}

OtherClass.cs

public class AddProperty1
{
	public static void Main2()
	{
	}
}

Add a breakpoint on line 7 of Program.cs.
Run the program, once it's paused, go to OtherClass.cs and replace the content to:

public class AddProperty1
{
	private static int A { get; set; }
	public static void Main2()
	{
		A = 11;
		System.Console.WriteLine(A);
	}
}

Mono runtime crashes:

field->type is NULL

[lambdageek]

/cc @fanyang-mono

[lambdageek]

I can repro. New test on https://github.com/lambdageek/runtime/commits/fix-gh-86172

[lambdageek]

ah ok, easy fix. we already check if a field is from a hot reload update in compute_class_bitmap. but we do it too late

update not an easy fix. seems like there is more that goes wrong